function parseOlympus($block, &$result, $seek, $globalOffset)
{
if ($result['Endien'] == "Intel") {
$intel = 1;
} else {
$intel = 0;
}
$model = $result['IFD0']['Model'];
$place = 8;
//current place
$offset = 8;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$num = intel2Moto($num);
}
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$tag = intel2Moto($tag);
}
$tag_name = lookup_Olympus_tag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$type = intel2Moto($type);
}
lookup_type($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel == 1) {
$count = intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel == 1) {
$value = intel2Moto($value);
}
$v = fseek($seek, $globalOffset + hexdec($value));
//offsets are from TIFF header which is 12 bytes from the start of the file
if ($v == 0) {
$data = fread($seek, $bytesofdata);
} else {
if ($v == -1) {
$result['Errors'] = $result['Errors']++;
}
}
}
$formated_data = formatOlympusData($type, $tag, $intel, $data);
if ($result['VerboseOutput'] == 1) {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
if ($type == "URATIONAL" || $type == "SRATIONAL" || $type == "USHORT" || $type == "SSHORT" || $type == "ULONG" || $type == "SLONG" || $type == "FLOAT" || $type == "DOUBLE") {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
}
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['RawData'] = $data;
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['Type'] = $type;
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['Bytes'] = $bytesofdata;
} else {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
}
function parseOlympus($block, &$result, $seek, $globalOffset)
{
if ($result['Endien'] == "Intel") {
$intel = 1;
} else {
$intel = 0;
}
$model = $result['IFD0']['Model'];
// New header for new DSLRs - Check for it because the
// number of bytes that count the IFD fields differ in each case.
// Fixed by Zenphoto 2/24/08
$new = false;
if (substr($block, 0, 8) == "OLYMPUS") {
$new = true;
} else {
if (substr($block, 0, 7) == "OLYMP" || substr($block, 0, 7) == "OLYMP") {
$new = false;
} else {
// Header does not match known Olympus headers.
// This is not a valid OLYMPUS Makernote.
return false;
}
}
// Offset of IFD entry after Olympus header.
$place = 8;
$offset = 8;
// Get number of tags (1 or 2 bytes, depending on New or Old makernote)
$countfieldbits = $new ? 1 : 2;
// New makernote repeats 1-byte value twice, so increment $place by 2 in either case.
$num = bin2hex(substr($block, $place, $countfieldbits));
$place += 2;
if ($intel == 1) {
$num = intel2Moto($num);
}
$ntags = hexdec($num);
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = $ntags;
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < $ntags; $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$tag = intel2Moto($tag);
}
$tag_name = lookup_Olympus_tag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$type = intel2Moto($type);
}
lookup_type($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel == 1) {
$count = intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel == 1) {
$value = intel2Moto($value);
}
$v = fseek($seek, $globalOffset + hexdec($value));
//offsets are from TIFF header which is 12 bytes from the start of the file
if (isset($GLOBALS['exiferFileSize']) && $v == 0 && $bytesofdata < $GLOBALS['exiferFileSize']) {
$data = fread($seek, $bytesofdata);
} else {
$result['Errors'] = $result['Errors']++;
$data = '';
}
}
$formated_data = formatOlympusData($type, $tag, $intel, $data);
if ($result['VerboseOutput'] == 1) {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
if ($type == "URATIONAL" || $type == "SRATIONAL" || $type == "USHORT" || $type == "SSHORT" || $type == "ULONG" || $type == "SLONG" || $type == "FLOAT" || $type == "DOUBLE") {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
}
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['RawData'] = $data;
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['Type'] = $type;
$result['SubIFD']['MakerNote'][$tag_name . "_Verbose"]['Bytes'] = $bytesofdata;
} else {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
}
